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A Magentoelectric Coefficient Measurement System with a Free-Stress Sample Holder

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Document pages: 11 pages

Abstract: Withless extra stress on the testing sample, a free-stress sample holder wasdesigned to place the sample horizontally. With the free-stress sample holder,a magnetoelectric (ME) coefficient measurement system was developed based ondynamic method. This measurement system has the hardware part and the softwarepart, integrated by the DC magnetic field generation module, the AC magneticfield generation module, the induced ME voltage detecting module and PCsoftware module. Then, a sample of Terfenol-D PZT Terfenol-D trilayer was designedand fabricated, and the relationships of its ME coefficient influenced by theDC magnetic field and the frequency of the AC magnetic field were tested usingthe measurement system. And the results showed that the free-stress sampleholder was proven to improve the accuracy of the measurement system by lessstress interference.

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